A free program for Android, by mechenbier.xyz.
This simple application is useful for finding out the status of the power supply. It is a handy utility that provides a simple means of checking the status of the electrical system in your home or office.
It is a great tool for people that need to make sure that the power is on and that there are no open switches or sockets.
It is very easy to use, and all you need to do is plug your device into the charger and then plug the charger into the outlet. If the sound is present, then the circuit is working and the power is on.
